Parts
At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.
Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.
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HK MP5, AP5 Cocking Handle
MKE
$17.95HK MP5 and AP5 Cocking Handle Factory OEM Replacement Factory OEM replacement AP5 cocking handle as found on MKE/Century AP5 models.Compatible With: HK MP5, MP5K, SP89, MP5SD HK SP5, SP5K, SP5-PDW, SP5L Century AP5, AP5-P, AP5-M In-spec clones...HKP-22475$17.95 -
HK VP9, VP40 Straight Trigger - Adjustable
Grayguns
$125.00Grayguns Adjustable Straight Trigger for HK VP9, VP40 Adjustable straight trigger for HK VP9 and VP40 standard variants. Features an over-travel adjustment and a 90-degree vertical wall for an optimal trigger break. The straight face allows a lower...HKP-22342$125.00 -
HK45, USP Magazine Spring - Extended
HKP HK Parts
$11.95HK45/USP Extended Magazine Spring .45 ACP Replacement spring for +7 and +10 HK Parts magazine extensions. Compatible With: HK45/HK45 Compact HK USPHKP-22299$11.95 -
HK CC9 Extended Base Plate with Finger Rest
HKP HK Parts
$69.95HKP CC9 Extended Base Plate with Finger Rest This extended base plate gives your CC9 magazine the extended look and enhanced grip of a full-capacity mag without adding any rounds. Perfect for restrictive states or anyone wanting a streamlined, tactical...HKP-22275-M$69.95 -
On Sale
HK MP5, HK90 Series Trigger Spring - SEF, Navy
MKE
Now: $2.45Was: $8.95MKE SEF & Navy 3 Position Trigger Spring The MKE trigger spring is an essential upgrade for anyone dealing with worn or broken trigger return springs in surplus trigger packs or as spares for all 90 series owners. These springs are fully compatible...HKP-22225Now: $2.45Was: $8.95 -
HK USP 11mm Front Sight
H&K Heckler & Koch
$37.95H&K HK USP 11mm Front Sight Built for a clear, consistent sight picture and improved target alignment. Compatible With: HK USP9 HK USP40 HK USP45 Does NOT fit Expert or EliteHKP-21996$37.95 -
HK VP9SK/P30SK 15 Round Extension
H&K Heckler & Koch
$32.95H&K VP9SK/P30SK 15 Round Extension HK VP9SK 15-round magazine extension made from durable black polymer with stippled texture. Compatible With: HK VP9SK & P30SKHKP-21991$32.95 -
HK MP5K to G3 Stock or Brace Adapter
HKP HK Parts
$113.95HKP HK MP5K to G3 Brace/Stock Adapter The MP5K/G3 adapter enables seamless compatibility between MP5K firearms and G3-style stocks. Designed for a secure and sturdy connection, it's an excellent upgrade for those looking to customize or swap...HKP-21853$113.95 -
HK91, G3 Tactical Handguard - Low Profile
PTR
$109.95PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile Made from aircraft-grade aluminum, rock-solid, and lightweight. This forearm allows you to add up to 3 rails on your firearm. That includes the left, right, as well as bottom sides, with the...HKP-21806-M$109.95 -
HK Firearm Cleaning and Tuning Kit
SchleTek
$69.95SchleTek Firearm Cleaning & Tuning Kit The SchleTek Firearm Cleaning & Tuning Kit is an all-in-one solution for maintaining peak performance and reliability in your firearms. Designed for both professionals and enthusiasts, this comprehensive kit...HKP-21732$69.95 -
Out Of Stock
TP9, MP9, APC9, SPC9, GHM9, KH9 Magazine Loader - 9mm
B&T Brugger & Thomet
$40.00B&T Magazine Loader - 9mm B&T's factory 9mm magazine loader is compatibly ONLY with B&T factory 9mm magazines. Compatible With: B&T TP9 B&T MP9 B&T APC9 B&T SPC9 B&T GHM9 B&T KH9HKP-21716$40.00 -
Out Of Stock
HK UMP Stock Block B Push Pin
HKP HK Parts
$34.95Stock Block B Sling Pin With Loop washer & Quick Pull Pin for UMP/USC (.40 S&W/ .45 ACP/9mm)HKP-21249$34.95